JP2003169356A - Private branch exchange and control method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a private branch exchange excellent in convenience, capable of calling an extension terminal by converting a port number notified from an I-number line into an incoming number of dial-in. <P>SOLUTION: A main controller 3 is provided where a call setting information 10 of an I-number line LIN notified from a station line trunk GT1 is analyzed. A message data 20 of dial-in of a call setting information region 5 stored in a storage 4 and a conversion data 30 of a conversion data 30 of a conversion data region 6 are read. A port number 12 of the I-number line LIN is converted into an incoming number 22 of dial-in. Extension trunks IT1-IT3 in which extension telephone sets TEL1-TEL3 corresponding to the converted incoming number 22 are housed, are controlled to call the extension telephone sets TEL1-TEL3 from the extension trunks IT1-IT3. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a private branch exchange capable of accommodating an I-number line, which is an additional service of ISDN, and more particularly to converting a port number notified from the I-number line into a called number for dialing in. The present invention relates to a private branch exchange for calling an extension terminal and its control method.

[0002]

2. Description of the Related Art ISDN (Integrated Service Digital)
An I-number is provided by NTT as an additional service of INS (registered trademark) Net 64 of Network), and TA corresponding to the service is provided through the I-number line.
"2 numbers" per line for subscribers who use telephones or facsimiles connected to (terminal adapter)
Alternatively, it is a service to assign "3 numbers".

"2 number" or "3 number" from outside line terminal
Phone number corresponding to (for example, "03- ○○○-×××
× −0001 ”or“ 03− ○○○ − ×××× −00
02 ”) is dialed, the telephone number is converted to I-number information (for example, port number“ 1 ”or port number“ 2 ”) by ISDN, and the T-number is transferred from the I-number line.
The call is received by the subscriber's telephone or facsimile via A (terminal adapter).

On the other hand, even for a plurality of extension terminals (telephones, facsimiles, etc.) connected to a private branch exchange of a business office,
There is provided a dial-in service in which a called number (telephone number) is assigned to each of a plurality of extension terminals and a call can be made directly from an outside line.

[0005]

Even if an I-number service is used for an extension terminal of a private branch exchange, since the private branch exchange is not connected via a TA (terminal adapter), the port number from the I-number line is not used. There is a problem that it cannot be received and the I-number service cannot be received.

The present invention has been made to solve such a problem, and its purpose is to convert a port number notified from an I-number line into a called number for dial-in call and call an extension terminal. An object of the present invention is to provide a private branch exchange and a control method thereof that are excellent in convenience.

[0007]

In order to solve the above problems, a private branch exchange according to the present invention comprises a speech path switch for forming a speech path between an extension terminal and an ISDN, and a main controller for controlling the operation of the entire exchange. A storage device for storing a switching operation control program, station data and a plurality of tables;
A private branch exchange having an office line trunk for accommodating an I-number line, which is an additional service of SDN, and an extension trunk for connecting extension terminals, wherein a main control unit is a call setting notified from the I-number line. It is characterized by analyzing the information and converting the port number into the called number of the dial-in incoming call and processing.

The main control unit of the private branch exchange according to the present invention analyzes the call setting information notified from the I-number line and converts the port number into the called number of the dial-in call,
Since the processing is performed, the port number of the I-number line can be changed to the called number of the dial-in incoming call and the extension terminal assigned by the called number of the dial-in incoming call can be called.
-The number service can be effectively used to improve convenience.

Further, the storage device according to the present invention is provided with a call setting information area for storing a called number of a dial-in call and a conversion table area for storing a conversion table for converting a port number into a called number. And

Since the storage device according to the present invention comprises the call setting information area for storing the called number of the dial-in call and the conversion table area for storing the conversion table for converting the port number into the called number, the I-number You can easily convert the port number notified from the line to the called number of the dial-in incoming call and call the extension terminal using the dial-in incoming call function, and use the I number service with a simple configuration of conversion table software processing. can do.

Further, a private branch exchange control method according to the present invention is a method for converting a port number notified from an I-number line into a called number of a dial-in incoming call and processing the identification number in the conversion data. In step S1 of searching the port number of the received call setting information and extracting the conversion destination number, and step S2 of determining whether the extracted conversion destination number is set, and if the registered destination number is registered. Performs the step S3 of deleting the facility information element of the received call setting information, the step S4 of editing into the called number information element based on the called number for conversion, the processing of dial-in call reception, and the call processing of the extension terminal And step S5 for performing.

The control method of the private branch exchange according to the present invention is as follows:
Step S1 of searching the port number of the received call setting information for the identification information in the conversion data and extracting the conversion destination number
A step S2 for determining whether or not the extracted conversion destination number is set, and a step S3 for deleting the facility information element of the received call setting information if registered, and a conversion destination number for conversion. Based on the step S4 of editing the called number information element based on the
Since the step S5 for executing the calling process of the extension terminal is provided, it is possible to change the port number of the I-number line to the called number of the dial-in call and call the extension terminal to which the called number of the dial-in call is assigned. Therefore, the I-number service can be effectively used to improve convenience.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. Note that the present invention converts the port number notified from the I number line to the called number of the dial-in incoming call for the extension terminal which cannot use the I number service, and the called number converted by the dial-in incoming call function is used from the private branch exchange. This is to call the extension terminal.

FIG. 1 is a basic block configuration diagram of an embodiment of a private branch exchange according to the present invention. In FIG. 1, a private branch exchange 1 includes extension telephones TEL1 to TELn which are extension terminals.
And ISDN (Integrated Service Digital Network:
A call path switch 2 that forms a call path between integrated service digital networks), a main controller 3 that controls the operation of the entire private branch exchange 1, and a storage device that stores an exchange operation control program, station data, and a plurality of tables. 4 and ISDN
A station line trunk GT1 accommodating an I-number line LIN, which is a supplementary service of the station, a station line trunk GT2 to GTl accommodating the station lines L1 to LK, and an extension telephone set TE.
Extension trunks IT1 to ITn for connecting L1 to TELn are provided. The communication path switch 2, the main control device 3, and the storage device 4 are connected via an internal bus BS.

The extension telephones TEL1 to TELn are connected to the extension trunks IT1 to ITn via the extensions Lr1 to Lrn, and the subscriber telephone TEL is connected to the ISDN.

The I-number line LIN has "3 number" of I-number service, and the telephone number (called number) corresponding to this "3 number" is assigned to the extension telephones TEL1 to TEL3.

The communication path switch 2 forms a time division switch or the like, and by the control of the main control unit 3, the extension trunk IT.
1 to ITn are connected to each other to form a communication path, and an extension communication between the extension telephones TEL1 to TELn is executed.

Further, the speech path switch 2 is composed of the main controller 3
Under the control of, the extension trunks IT1 to IT3 are connected to the office trunk GT1 to form a speech path, and the I-number line LIN and the extension telephones TEL1 to TEL3 are used to perform the outside call in the I-number service and the extension trunk. IT4 to ITn and office line trunks GT2 to GTl are connected to form a communication path, and office lines L1 to Lk and extension telephone TEL are connected.
Make an external call from 4 to TELn.

The main control unit 3 is provided with various processing functions and sequence functions based on a microprocessor, and is provided with a speech path switch 2, extension trunks IT1 to ITn, and station trunk GT.
1 to control the operation of GTl.

The main controller 3 is also a trunk line GT.
The call setup information of the I-number line LIN notified from 1 is analyzed, and the dial-in incoming message data of the call setup information area and the conversion data of the conversion data area stored in the storage device 4 are read to read the I-number line. The LIN port number is converted into a dialed-in incoming call number, the extension trunks IT1 to IT3 that accommodate the extension telephones TEL1 to TEL3 corresponding to the converted called number are controlled, and the extension trunks IT1 to IT3 to the extension telephones TEL1 to TEL3 are controlled. To call.

Further, when the dial-in incoming call service is received, the main control unit 3 analyzes the called number received by the office line trunks GT2 to GTl from the office lines L1 to Lk and notified to the storage device 4. The dial-in incoming message data in the stored call setting information area is read out to control the extension trunks IT4 to ITn accommodating the extension telephones TEL4 to TELn corresponding to the called number, and the extension trunks IT4 to ITn to the extension telephones TEL4 to TELn. To call.

The storage device 4 is a fixed memory such as a ROM or R
It is composed of rewritable memory such as AM, EEPROM, flash memory (FM), etc., stores various data and programs on the extension side and outside line necessary for the operation of the private branch exchange 1, and supports the operation of the control device 3. , Provides various data according to commands from the control device 3.

The storage device 4 also includes a call setting information area and a conversion table area. FIG. 3 is a memory area image diagram of the storage device according to the present invention. In FIG. 3, the storage device 4 stores a call setting information area 5 for storing a called number of a dial-in call and a conversion table for converting a port number included in the call setting information of the I-number line LIN into a called number. The conversion table area 6 is provided, and under the control of the main controller 3, support for identifying the called number from the port number is executed.

FIG. 2 is a sequence diagram of a system including a private branch exchange according to the present invention. In FIG. 2, the subscriber telephone TE
Line number for L to I-number (for example, "03- ○
○○ − ×××× −0001 ”) is dialed, ISDN (Integrated Service Digital Network)
Within the line number for I-number (for example, "03- ○○
○ − ×××× −0001 ”) is the port number (for example,
"1"), and the call setting information including the converted port number is set.

Next, ISDN (Integrated Service D
igital Network) sends the set call setting information via the I-number line LIN to the central line trunk GT1 of the private branch exchange 1.
To the main controller 3, the call setting information notified by the office line trunk GT1 is notified.

The main controller 3 analyzes the port number (for example, "1") included in the call setting information, and determines the port number (for example, "1") as the called number of the dial-in call (for example, "1").
"03- ○○○-××× △ -0001"), and by sending call information to the extension telephone TEL1 corresponding to the called number and connecting to the extension telephone TEL and the extension accommodated in the private branch exchange 1. The telephone TEL1 can talk using the I-number service.

Next, I-number incoming call setting information, dial-in incoming message data stored in the call setting information area 5 shown in FIG. 3, and conversion data stored in the conversion table area 6 will be described.

FIG. 4 is a configuration diagram of call setting information. In FIG. 4, the call setting information 10 has a message structure when an I-number is received, and a port number 12 (for example, “1”) is described in the facility information element 11.

FIG. 5 is a configuration diagram of message data for dial-in incoming call. In FIG. 5, the dial-in incoming message data 20 includes a called number information element 21, and by analyzing the contents of the called number information element 21, the called number 22 (for example, “03- ○○○ − ××× △
-0001 ") can be searched and the extension telephone TE
You can connect to L1 and talk.

FIG. 6 is a block diagram of conversion data according to the present invention. In FIG. 6, the conversion data 30 includes a port number 12 for I-number (for example, "1") and a called number 22 for dial-in call (for example, "03- ○○○ -XXXXX".
Represents the entire data structure to be converted into (-0001)).

The identification information 31 describes the identification information of the station trunk GT1, and the incoming call information 32 includes the port number corresponding to the identification information 31 of the station trunk GT1 (for example,
"1") is described, and the conversion destination number 33 corresponds to the incoming call information 32 (port number "1") (for example, "03- ○○○-××× Δ-0001"). ) Is described.

The conversion data 30 is the station trunk GT.
A conversion destination number 33 (for example, "03- ○○○-×××" corresponding to the identification information 31, the incoming call information 32 (port number "1"), and the incoming call information 32 (port number "1")
△ -0001 ") is one block and is composed of multiple blocks and can be freely rewritten according to operating conditions. When accommodating multiple I-number lines, incoming call information (port number) is set for each station line trunk. ), The conversion destination number can be arbitrarily determined.

Thus, the private branch exchange 1 according to the present invention
The main controller 3 analyzes the call setting information 10 notified from the I-number line LIN, converts the port number 12 into the dialed-in incoming number 22 and processes it.
Number line LIN port number 12 (for example,
"1") is changed to the called number 22 of the dial-in incoming call and the called number 22 of the dial-in incoming call (for example, "03- ○○○"
Extension terminal T assigned by "-XXXXX-0001")
EL1 can be called and the I-number service can be effectively used to improve convenience.

Further, the storage device 4 according to the present invention has a call setting information area 5 for storing a called number 22 of a dial-in incoming call.
And the conversion table area 6 for storing a conversion table for converting the port number 12 into the called number 22, the port number 12 notified from the I-number line LIN can be easily converted into the dialed-in called number 22. Then, the extension terminal (for example, extension telephone TE
L1) can be called, and the I number service can be used with a simple structure of soft processing of the conversion table.

Next, a method of controlling the private branch exchange for converting the I-number port number into the called number of the dial-in incoming call and connecting it will be described. FIG. 7 is a flowchart showing the operation of the essential parts of an embodiment of a method of controlling a private branch exchange according to the present invention.

In step S1, the port number 12 of the call setting information 10 that has received the identification information 31 in the conversion data 30.
And the conversion destination number 33 is extracted. The operation in step S1 is executed by the office line trunk GT1, the main control device 3, and the storage device 4.

In step S2, it is determined whether or not the extracted conversion destination number 33 is set, and the conversion destination number 3 is set.
If 3 is set, the process proceeds to step S3.
On the other hand, if the conversion destination number 33 is not set, the process proceeds to step S6. The operation in step S2 is
Main controller 3 executes.

In step S3, the received call setting information 1
The facility information element 11 of 0 is deleted. The operation of step S3 is executed by main controller 3.

In step S4, the called number information element 21 is edited based on the conversion called number 33. The operation of step S4 is executed by main controller 3 and storage device 4.

In step S5, a dial-in incoming call is processed and an extension terminal (for example, extension telephones TEL1 to TE).
The calling process of L3) is executed. The operation of step S5 is executed by main controller 3 and extension trunks IT1 to IT3.

In step S6, for example, dial-in incoming call processing is executed. The operation of step S6 is executed by main controller 3.

As described above, in the method of controlling the private branch exchange according to the present invention, the step of searching the port number 12 of the received call setting information 10 for the identification information 31 in the conversion data 30 and extracting the conversion destination number 33 S1 and step S for determining whether or not the extracted conversion destination number 33 is set
2 and received call setting information 10 if registered
Step S3 of deleting the facility information element 11 of
Step S4 of editing the called number information element 21 based on the conversion called number 33, and dial-in incoming call processing, and extension terminals (for example, extension telephones TEL1 to TEL3).
And step S5 for executing the calling process of
-The port number 12 of the numbered line can be changed to the called number of the dial-in incoming call to call the extension terminal to which the called number of the dial-in incoming call is assigned, and the I-number service can be effectively used to improve the convenience. Can be achieved.

In the present embodiment, one I-number line LIN and the corresponding extension telephones TEL1 to TEL are used.
As described in 3, the I-number line may be a plurality of lines, and the corresponding extension telephones may be a multiple of three.

[0044]

As described above, the main control unit of the private branch exchange according to the present invention analyzes the call setting information notified from the I-number line and converts the port number into the called number of the dial-in call. , It is possible to change the port number of the I-number line to the called-in number of the dial-in call and call the extension terminal assigned by the called-in number of the dial-in call to effectively use the I-number service. Therefore, the convenience can be improved.

Further, since the storage device according to the present invention is provided with the call setting information area for storing the called number of the dial-in call and the conversion table area for storing the conversion table for converting the port number into the called number, I -The port number notified from the number line can be easily converted into the called number of the dial-in incoming call, and the extension terminal can be called by using the dial-in incoming call function, and the I-number service with a simple configuration of the conversion table software processing. Can be used.

Further, in the private branch exchange control method according to the present invention, step S1 of searching the port number of the received call setting information for the identification information in the conversion data and extracting the conversion destination number, and the extracted conversion Step S2 of determining whether the called number is set, step S3 of deleting the facility information element of the received call setting information if registered, and called number information element based on the conversion called number Since there is provided step S4 for editing the dial-in incoming call and step S5 for processing the dial-in incoming call and executing the call processing of the extension terminal, the port number of the I-number line is changed to the called-in number for dial-in incoming dialing. It is possible to call an extension terminal to which the called number of the incoming call is assigned, and
The number service can be effectively used to improve convenience.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of an embodiment of a private branch exchange according to the present invention.

FIG. 2 is a sequence diagram of a system including a private branch exchange according to the present invention.

FIG. 3 is an image diagram of a memory area of a storage device according to the present invention.

FIG. 4 is a block diagram of call setting information.

FIG. 5 is a configuration diagram of message data of dial-in incoming call.

FIG. 6 is a configuration diagram of conversion data according to the present invention.

FIG. 7 is an operation flow chart of essential parts of an embodiment of a method of controlling a private branch exchange according to the present invention.

[Explanation of symbols]

1 Private branch exchange 2 Call path switch 3 Main controller 4 storage devices 5 Call setup information area 6 conversion table area 10 Call setup information 11 Facility information element 12 port numbers 20 Message data for incoming dial-in 21 Called party number information element 22 called number 30 converted data 31 Identification information: Office line trunk GT1 32 Called number (port number): Corresponding to identification information 31 33 Conversion destination number: Port number 32 compatible TEL1 to TELn extension telephones TEL subscriber telephone IT1 to ITn extension trunk GT1 to GTl external trunk LIn I-number line L1 to Lk station line Lr1 to Ln extension BS internal bus

Claims (3)

[Claims] 1. A communication path switch for forming a communication path between an extension terminal and an ISDN, a main control device for controlling the operation of the entire exchange, and a storage device for storing an exchange operation control program, station data and a plurality of tables. A private branch exchange comprising an office trunk for accommodating an I-number line, which is an additional service of the ISDN, and an extension trunk for connecting the extension terminal, wherein the main control unit is the I-number line. A private branch exchange characterized by analyzing call setting information notified from the server, converting a port number into a called number of a dial-in incoming call, and processing the number. 2. The storage device comprises a call setting information area for storing a called number of the dial-in call and a conversion table area for storing a conversion table for converting a port number into a called number. The private branch exchange according to claim 1. 3. A method of controlling a private branch exchange for converting a port number notified from an I-number line into a called number of a dial-in call, and processing the received call setting information of the identification information in the conversion data. Step S1 of searching for port number and extracting conversion destination number
A step S2 for determining whether or not the extracted conversion destination number is set, and a step S3 for deleting the facility information element of the received call setting information if registered, and a conversion destination number for the conversion destination number. A private branch exchange control method comprising: a step S4 of editing a called number information element based on the step; and a step S5 of processing a dial-in incoming call and executing a call processing of an extension terminal.